There is vegan tattoo ink. Intenze is one tattoo ink manufacturer that does not include any animal products in the tattoo ink that it produces.
Crushed animal bone is often among the ingredients of black tattoo ink. Tattoo ink also sometimes contains animal fat that is present in the glycerins that tattoo ink manufacturers mix into the ink. The availability of vegan tattoo ink on the market reflects the growing concern of consumers with respect to the animal products present in many non-food items. This concern among consumers has also led to the availability of cosmetics that are manufactured without animal testing.